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    • Inhomogeneous Broadening and the Kosterlitz-Thouless Transition 

      COLLINS, M.; Agnolet, Glenn; SASLOW, WM; KROTSCHECK, E. (American Physical Society, 1993)
      Torsional-oscillator studies of very thin He-4 films have found nonuniversal behavior of the superfluid response as a function of coverage. The temperature width of the superfluid transition region is nonmonotonic in the ...